The filmmakers behind "Wrong Turn" might've thoughtfully chosen the title to warn potential viewers away from their banal little horror movie. (Hah.) But if you don't want to sit through bursts of slasher-film gore let loose by inbred, cannibalistic mountain men chasing a sextet of attractive, imprudent young people through the forsaken backwoods of West Virginia, you'd be better off turning around and forsaking "Wrong Turn." For all of the formula frenzy that "Wrong Turn" exhibits, getting there, exactly where you know you're going from the start, is enough fun to merit killing a Saturday night by watching it. An upright fellow (Desmond Harrington) with a medical education crashes his car into an RV carrying two guys and three girls on a camping trip. Yep, it's a no-doubter: The single dude's gonna hook up with the extra babe (Eliza Dushku), and his doctoring skills will be critical when subhumans attack. "The Hills Have Eyes" and "Texas Chainsaw Massacre" already did this to death upon death. That said, "Wrong Turn" travels to its pre-destination at maximum speed and features a hideous new generation of mutated hillbilly psychos, designed by make-up genius Stan Winston.